Hi again, just been sitting in the garden trying to enjoy the warm rays of the sun. Awful smell, like the fuel smell at the airport, but this time in my garden. Couldn't figure out what it was first. Checked my tank, etc. Then remembered neighbour at back of garden had built a shed and his heating boiler is in this shed, which backs onto us. Peered over wall, as you do, and noticed his outlet chimney is at eye level to our garden, no high chimney like our house has at above roof level if you follow. So all the fumes are coming at us and the rest of the surrounding gardens. Must be wrong? Any idea where to check up on regulations about boiler outlets, etc. Thanks, cough cough......