My 2 cents worth on the Than Merrill and Fortune Builders thing:  I heard the radio ad so I must give credit for him lighting the fire under me to stop thinking about it and start DOING it. 

Some examples of habitability codes are functional toilets, functional sinks, functional smoke detectors and carbon monoxide alarms, weathertight windows and doors leading outside, bathrooms must have a mechanical vent or an easily opened window, a bedroom must have an easily opened window and either two electrical outlets or one electrical outlet and a light fixture and all pipes, plumbing and electrical must be per code.

First warning sign was she paid first, last, security ($4600 total), in like 7 money orders.  

It's not a process you want to take lightly. http://www.bedbugs.org/heat/

One warning, though, historically the AV has been boom or bust, which means that it has gotten hit hard every downturn price wise.

- It's sort of a be prepared for the Big One warning, and how to prepare.There are other important topics he covers as well

Example: - Clean dirty fridge: $50- Replace scorched stove drip pans: $10 per pan- Replace interior door: $200- Replace light bulb: $5 per bulb,  etc., etc.

I'll use this as down payments and light remodeling.

Anyways, I want to tread lightly here as I don't want to get sued or fined or something.

However, if they are complaining a couple of months into the lease and they knew about the smell before the decided to move in and you didn't mention anything about removing the smell prior to the move in date, I would tell them to light a candle.