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.  

However, in those instances we do inspect and keep a watch to make sure food is not rotting in a fridge, pipes are not freezing, candles are not being used as a light source, etc.  

Personally I burned the candle at both ends before going full time 10 years ago. 

Recently had turn over in one of our newly renovated apartments. It is a small space <700 sq. ft. and not HVAC. The tenant had complained about "dust" and waking up with black phlegm, etc. She was our second tenant...

The tenants had moved someone into the basement without authorization, and they ended up starting a fire in the basement accidentally with candles.

She said well we don't think it's that and continued telling me about hearing foot steps and a candle falling off the back of the toilet into the garbage can etc etc. 

Until something like that happens, I have a hard time believing that any particular neighborhood will be able to hold a candle to what happened in Lawrenceville.

Burning the candle at both ends to make it work.

I just light a candle, open windows and it's gone in a few hours.....It's not like the odor of cigarettes.

The tenant may start using candles.