Hi, I live in a terraced house and the house next door to me was renovated last year. The boiler is in next door's utility room and when it is on it sends clouds of white mist over the wall into my yard. Ok, the question is... is this ok? I don't spend any time out in my yard so it's not as though I'm trying to find my way through clouds of mist, but I don't know what the mist is. Steam... fumes? It smells a bit odd. Thanks for any help.