One option might be to explore adding air purifiers or filters directly into the system to help mitigate odors.

Quote from @Jeremy Dugan: I am a US Air Force and Massachusetts Air National Guard veteran with 20-years of experience as a military Civil Engineer.

The same with cleaners and maintenance people.

Designers often forget about the practicality part and don't think about cleaners.

If you do a forced air with ducting, you could do a heat pump.

This is the only app I can find customized for tracking your hours and that of your cleaners, handymen etc...

Currently I am working in partnership on a luxury Air Bnb property in the Philippines to familiarize myself in short-term rentals.I live in Cerritos, CA and am looking to invest into a multi-family home to house-hack in Orange County, CA to get started.I will need a residential agent and possibly a contractor.I look forward to learning and hopefully working with you all!

See managing on the coast is plausible and there are great cleaners and crews on the ground willing to work hard.

Out of curiosity, how long after a guest leaves do you or your cleaners check on the property?  

If millenial homeowners can't even change their home's air filters, or snake a toilet, or change the oil in their car, that's guaranteed future business for HVAC companies, plumbers, mechanics, and those places all need a place to conduct business in.The commercial mortgage pricing software I use has somewhere around 50 different asset classes in it.