I have awesome in laws, they are kind and generous overall wonderful people. They live 2.5 hours away from us so visiting is tough especially now that my MIL is sick. So them visiting us at our home has stopped and we drive up there for LO and his sister to visit. She hasn't been doing too well and even going out for a couple hours with us as a family unit exhausts her for days. She's always had health problems but it seems to be getting worse in the last 2 years. However I notice every time we go up there LO gets a cold and a persistent cough. Last time we were there LO had a month long cold. He was just getting over it these past couple weeks and we go up there, now it's back. DH and I always wondered if their home is making her sick somehow, though it's just a guess. Does anyone else here think that home environment can trigger cold infections? Other then the obvi like someone with a cold or unclean house (their house gets cleaned by a housekeeper regularly).