Generally speaking, yes they are. Most of this is subconscious. We don’t see it in ourselves but the researchers see it in us. This contagiousness is especially strong when we are in frequent contact with others. In one three-year study of 150 couples, wives were not significantly affected. But the husbands’ general marital satisfaction decreased when their wives were stressed. This was further amplified under conflict, where men became more rejecting and critical.
At work: Heads up for whom you work with.
At home: Wives, you have more influence than you may have thought.
With friends: Maybe you should tell them of your mood so they can prepare.
Scientific American Mind, Page 72. July 2012