This is a home to these people. Just because you rent a apartment does that now mean that you lose property rights, and the police don't have to knock on your door?
Summit retirement Home case dismissed due to it being a home and not a workplace
http://www.canlii.org/on/cas/oncj/2004/2004oncj71.html
BTW what is the DEA (being Canadian, I don't know the answer to that question)
In the US, the DEA is Drug Enforcement Agency. I'm not sure why the other poster mentioned it.
IMHO, the home has to look out for all residents, not just the ones who choose to smoke. The guy chose a non-smoking facility to move into so he has to follow their rules. He chose to go outside to smoke in sub freezing temps, no one forced him. He made all of his own choices.