anyone in the building traid?

ok, Next door which is bellow my office is exstending his rear office, he is useing a petrol or whatever grinder to remove stuff, it smells of oil,

This morning i woke up fealing ok and fine, Now i got to the office and fine, hes started using this just today and im fealing sick and light headed, my chest is starting to hurt, is this dangerous or am i being a girl?

i mean my hole office sticks of fuel, oil. Cant open the windows as it makes it worse..

i've been down and told them and they say it'll be ok and sorry for the smell.

am i to be worryed? as our care manager is pregnant april time due, And shes come in to work...