At this point all you can do is hope you can either air it out, use an ozone machine-make sure you follow directions.

1) vermiculite (likely asbestos containing) in attic underneath blown fibreglass - not an issue unless we need to access / do work in the attic (see ventilation below)2) soffits are poorly vented but I was told there are ways to vent them and install baffles without going through the attic3) three bathrooms have no ventilation fans (they have windows) and the ceiling on two of them is peeling / potential mold or rot4) main kitchen hood fan is removed and didn't seem to be vented to the outside anywaysSo considering the tenants are smokers (saw windows open with space heaters on during the inspection) I'm thinking the ventilation issues are priority to a) improve the indoor air quality b) reduce the amount of heat leaving the home.

@Jordan Moorhead - i've been reading your responses throughout these forums (very informative, thank you).

For us, Air DNA was mostly used for seeing occupancy rates and seasonality as the listings don't really show you that.

Currently I am Active Duty Air Force located in the Central/South Jersey Area.

One option I've heard before is to offer putting the tenant in a hotel or Air BNB for a week or two while renovations are taking place, and pay for that cost.

B) Find a creative strategy in you area that does work for cash flow (Air BnB, Finding some niche strategy you can apply like adding units or renovating properties with big issues like bad foundations).C) Invest in a different market. 

I live in an area I believe to have a huge untapped market of the off grid - cabin getaway-  Air BNB scene.

I will be moving out of my house hack this winter and turning the upper unit into a 12 month rental and keeping the basement as an air bnb.

I am from the New England area but retired out of the Air Force in North Carolina looking to learn about Multi-Family investment as I can.