AMENDED AND RESTATED
                             SECURED PROMISSORY NOTE

$2,400,000.00                                                   October 25, 2004


                                R E C I T A L S:

A. FKA Distributing Co. d/b/a HoMedics,  Inc., a Michigan corporation ("Lender")
has  previously  loaned  the  undersigned  $2,400,000.00  pursuant  to a Secured
Promissory Note in the principal amount of $2,400,000.00, dated May 9, 2003 (the
"Original $2.4 Million Note").

B. This Amended and Restated Secured  Promissory Note ("Note") amends,  restates
and replaces the Original  $2.4 Million Note and upon  execution of this Note by
the undersigned, Lender will destroy the Original $2.4 Million Note.

NOW,  THEREFORE,  from the date of this  Note,  the  terms of  repayment  are as
follows:

FOR VALUE  RECEIVED,  the  undersigned,  Kronos Advanced  Technologies,  Inc., a
Nevada  corporation  ("Kronos"),  and Kronos Air  Technologies,  Inc.,  a Nevada
corporation,  promise to pay to the order of Lender, at the office of the Lender
in the State of Michigan,  Two Million  Four Hundred and 00/100  ($2,400,000.00)
Dollars (U.S.) as set forth herein.  All accrued  interest  attributable  to the
Original  $2.4 Million Note prior to the date of this Note shall remain  payable
to Lender  subject to the terms of this Note.  Interest on the unpaid  principal
balance has been accruing  since May 9, 2003 and shall continue to accrue at the
rate of 6% per annum until maturity,  whether by  acceleration or otherwise,  or
until Default,  as later defined,  and after that at a default rate equal to the
rate of interest otherwise  prevailing under this Note plus 3% per annum (but in
no event in excess of the maximum  rate  permitted  by law).  Interest  shall be
calculated  for the actual  number of days the principal is  outstanding  on the
basis of a 365/366 day year. No payments shall be required under this Note until
the earlier of: (i) the quarter following the Production Effective Date (as such
term is defined in the  Exclusive  License  Agreement  dated  October  23,  2002
between Lender and Kronos, as amended); or (ii) twenty-four (24) months from the
date of this Note (the  "Repayment  Start  Date").  Interest  shall  continue to
accrue and all accrued  interest  from the  Original  $2.4 Million Note and this
Note shall,  on the Repayment Start Date,  become part of the principal  balance
under  this Note and be  included  as  principal  for  purposes  of  calculating
amortization.  Payments of  principal  and accrued  interest due under this Note
shall be payable in equal quarterly  installments  beginning on the first day of
the quarter  following the Repayment  Start Date and continuing on the first day
of each November,  February, May and August. The entire remaining unpaid balance
of  principal  and  accrued  interest  shall  be  payable  on  the  fifth  (5th)
anniversary  of this Note.  A late  installment  charge equal to 5% of each late
installment may be charged on any installment payment not received by the Lender
within 10  calendar  days after the  installment  due date,  but  acceptance  of
payment of this charge shall not waive any Default under this Note.

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This  Note  and  any  other  indebtedness  and  liabilities  of any  kind of the
undersigned to the Lender, and any and all modifications, renewals or extensions
of it, whether joint or several,  contingent or absolute,  now existing or later
arising,  and however evidenced  (collectively  "Indebtedness")  have previously
been and continue to be secured by and the Lender is granted a security interest
in all property of the  undersigned  from time to time in the  possession of the
Lender and by any other collateral,  rights and properties described in each and
every mortgage,  security  agreement,  pledge,  assignment and other security or
collateral  agreement  which has been, or will at any time(s) later be, executed
by  the  undersigned  to  or  for  the  benefit  of  the  Lender   (collectively
"Collateral").

If the undersigned (a) fail to pay this Note or any of the Indebtedness when due
(after the  expiration  of the 30 day grace  period as set forth in that certain
First  Amendment to Master Loan and  Investment  Agreement of even date herewith
among the parties (the "Master Loan Agreement")),  by maturity,  acceleration or
otherwise;  or (b) fail to  comply  (after  the  expiration  of the 30 day grace
period  as set  forth in the  Master  Loan  Agreement)  with any of the terms or
provisions  of any  agreement  between the  undersigned  and the Lender;  or (c)
become the subject of a voluntary or involuntary proceeding in bankruptcy,  or a
reorganization,  arrangement or creditor  composition  proceeding,  ceases doing
business as a going  concern,  dissolves  or, is the  subject of a  dissolution,
merger or consolidation;  or (d) if any warranty or  representation  made by the
undersigned  in  connection  with the Original $2.4 Million Note or this Note or
any of the  Indebtedness  shall be  discovered  to be false or misleading in any
material respect; (e) or if there is any termination,  notice of termination, or
breach of any guaranty, pledge, collateral assignment or subordination agreement
relating to all or any part of the Indebtedness;  or (f) if there is any failure
by the  undersigned  to pay when due (after the  expiration  of the 30 day grace
period as set forth in the Master Loan  Agreement)  any of its  indebtedness  in
excess of $25,000 (other than to the Lender) or in the observance or performance
of any term,  covenant or  condition  in any  document  evidencing,  securing or
relating to such indebtedness; or (g) if there is filed or issued a levy or writ
of attachment or garnishment or other like judicial process upon the undersigned
or any of the Collateral,  then the Lender,  upon the occurrence of any of these
events  (each  a  "Default"),  may  at  its  option  declare  any  or all of the
Indebtedness  to be  immediately  due and payable,  sell or liquidate all or any
portion of the Collateral, set off against the Indebtedness any amounts owing by
the Lender to the  undersigned,  charge interest at the default rate provided in
the document  evidencing the relevant  Indebtedness and exercise any one or more
of the rights and  remedies  granted  to the  Lender by any  agreement  with the
undersigned  or given to it under  applicable  law. All payments under this Note
shall be in  immediately  available  United  States  funds,  without  setoff  or
counterclaim.

This Note shall bind the undersigned, its successors and assigns.

The undersigned waive presentment,  demand, protest, notice of dishonor,  notice
of demand or intent to demand,  notice of  acceleration or intent to accelerate,
and all other  notices,  and  agrees  that no  extension  or  indulgence  to the
undersigned or release shall affect the obligations of any of the undersigned.

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The undersigned  agree to reimburse the holder or owner of this Note for any and
all costs and expenses (including without limit, court costs, legal expenses and
reasonable  attorney fees, whether inside or outside counsel is used, whether or
not suit is instituted  and, if suit is  instituted,  whether at the trial court
level, appellate level, in a bankruptcy, probate or administrative proceeding or
otherwise) incurred in collecting or attempting to collect this Note or incurred
in any other matter or proceeding relating to this Note.

The  undersigned  acknowledge  and agree that there are no contrary  agreements,
oral or written,  establishing  a term of this Note and agree that the terms and
conditions  of this  Note may not be  amended,  waived or  modified  except in a
writing  signed by an officer of the Lender  expressly  stating that the writing
constitutes an amendment,  waiver or  modification of the terms of this Note. As
used in this Note, the word "undersigned" means each maker signing this Note. If
any provision of this Note is unenforceable in whole or part for any reason, the
remaining provisions shall continue to be effective. THIS NOTE SHALL BE GOVERNED
BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF MICHIGAN.

THE UNDERSIGNED AND THE LENDER  ACKNOWLEDGE THAT THE RIGHT TO TRIAL BY JURY IS A
CONSTITUTIONAL  ONE, BUT THAT IT MAY BE WAIVED. EACH PARTY, AFTER CONSULTING (OR
HAVING HAD THE  OPPORTUNITY TO CONSULT) WITH COUNSEL OF THEIR CHOICE,  KNOWINGLY
AND VOLUNTARILY, AND FOR THEIR MUTUAL BENEFIT, WAIVES ANY RIGHT TO TRIAL BY JURY
IN THE EVENT OF LITIGATION  REGARDING THE  PERFORMANCE OR ENFORCEMENT  OF, OR IN
ANY WAY RELATED TO, THIS NOTE OR THE INDEBTEDNESS.


                             KRONOS ADVANCED TECHNOLOGIES, INC.,
                             A NEVADA CORPORATION

                             By:_______________________________________

                             Name:_____________________________________

                             Its:______________________________________

                             KRONOS AIR TECHNOLOGIES, INC.,
                             a Nevada corporation

                             By:_______________________________________

                             Name:_____________________________________


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