There are lots of buildings, with a dark history. Glue used for the carpet that constantly exhales solvents- its especially horrible if your building was a indu

There are lots of buildings, with a dark history. Glue used for the carpet that constantly exhales solvents- its especially horrible if your building was a industrial site before. Those brick buildings near trainstations, that where formerly train maintenance sheds are particularly horrible, as the oil in most trains was highly carcinogenic and seeped right into the brick during maintenance. https://en.wikipedia.org/wiki/Transformer_oil#Polychlorinated_biphenyls_(PCBs) https://en.wikipedia.org/wiki/Transformer_oil#Polychlorinate... Always read up on the history of the building you are working in. Also, always google industrial scandals in the local news-paper- usually they just rebuild right over spill sites- and the stuff smells up after rain.