I am going to re-post what was said above to add my voice. Can't say it any better than this:
1. It is this outrageous for Airbnb to expect us to take anyone for free saying infancts pose no impact, well that is just wrong. An average infant has at least 7-8 dipers a day to dispose along with wipes,etc. They use water, electricity and have the ability and the will to touch, mar and damage many surfaces in the home requiring extra cleaning.
2. It is not only dangerous but ILLEGAL to go over stated occuapancy of homes. The legal team at Airbnb need to check out the National Electric Codes, "Life Saftey Code", that regulates fire safety as it pertains to hospital and rentals or anywere people gather. Infants are classified as non ambulatoory so thus more at risk. Does Airbnb want bad press due to a fire tragedy?