I had the bejeebers scared out of me today when fumes and smoke started billowing up out of the basement today - which is inhabited by other businesses - all is fine and the damage is mostly in the business next to mine. It turns out it was concrete dust and a piece of equipment that was overheating (oh and there was NO one around to oversea the equipment the workers just left it unattended).
I'm not sure what all was going on in the basement as the smoke/fumes was too much to be down there but the fire department was on top of it all. I'm still contemplating, however, calling my insurance agent in the morning though I've never had an experience like this before, and just as I was finally beginning to feel comfortable in my new space! Not so much now. Looking back I should have gotten my digital camera out and took pictures but hey the Fire Department was there so there ARE witnesses to the fact that there was smoke/dust and fumes everywhere.
John and I went back later this evening to get my shoes, I forgot my shoes in the rush to leave the building (ok I take two pairs with me so I can change out during the day and these were my fav's) and the stench of chemicals was overwhelming so I'm glad we left early.