My guess would be that if someone is a wonderful emotional state, they won’t commit suicide after being embarrassed, but if they are already depressed, it might be a contributing factor.
In general, we have no idea what the effects of our words and actions are, for good or for bad, and we have to always be extremely careful about everything we do. There are many stories of people who were about to commit suicide and changed their minds at the last minute because one person was a bit friendly to them at the right moment. Even if you are not preventing a suicide by being friendly, you may uplift the person’s mood and he may then prevent someone from committing suicide or he may make a life-altering decision.
We cannot fathom the effect of our simple actions!