The financial crisis of 2008 was caused by systemic problems within the banking system as well as the undeniable moral hazard permeating throughout the housing market.

To my shock, the room was full of smoke/nicotine aroma. 

The downside is that inflation will permeate through the entire economy making everything more expensive, leaving less disposable income for consumers.

If you feel the mold has permeated the walls, have it remediated by replacing the drywall. 

Kitchen grease and nicotine can also carry odors in a house and have to be removed/cleaned.

Heavy smokers lived in the place before and the nicotine literally dripped down the walls.

Great for removing nicotine stains from windows, etc.

Furnace filters will show the yellow tinge of nicotine.  

Brick duplex on a crawl space (never seen one before. seen either vinyl or wood) 2 section 8 tenants (7 yrs, 5 yrs) asking price $75k (assessed value at $29k) current rent - $1,400/month = gross - $16,800 insurance (guess) - $100/month (could be more) = $1,200 taxes - current year - $2,500 (most have been $4k) will have to use PM since it's 30 mins away - $150 per month Repairs - $100 month (average) no immediate repairs, they seem to be happy living in clutter and nicotine discolored walls according to @Joel Owens formula:gross rent - $16,800NOI = 16,800*.4 = $6,720CAP = $6820/75k (asking) = 8.96it's a C area, but not warzone. that whole town is that way. it reminds me of flint (great at one time), but without the crime.Basic formula:15 yr ammortization, 5.25% apr = ~$466,expense of P&I + PM+repairs+insurance+taxes (current) = 466+150+100+100+208 = $1,024Rent = $1400Profit = $376 = $188 per door

The walls were nicotine-stained and the owner had made his 3-bedroom home into a 2-bedroom.