That's right, a new study done shows that obesity is contagious. That if you have a friend, sibling, or spouse who is overweight you are more likely to be overweight yourself. That you adopt their eating habits. If anything I'd think people would learn from looking at a friend, spouse, or sibling whose overweight and just think "wow they're fat and unhealthy, maybe I should not eat like them".
Becareful, coming in contact with the obese may give you obesity! DUN DUN DUN!!!