Always ask how they are feeling?
How are they coping?
Do they feel sad/depressed?
If depressed, maybe ask if they've been given medications?
Ask if there emotions prevent them from completing tasks, or if life in general has become more difficult due to them coping?
Drugs can prohibit dangerous behavior, and often result in actions consumers can't remember and/or have no control over. Such as vandalism, injury, threatening other victims, and even death. Making such drugs can be dangerous, as people may add or slip things into the drug of choice.
its a respect of someones property.