[holly]

Hi,
I am a retired welder and would sugest that the best way would be to by a portabe fume extractor. These remove the fumes at the work area, fillter it and return the clean air back to the room.
They come in all sizes depending on the amount of smoke ect. you want to remove.
My advice would be to contact a local welding supplier who will be able to give you a list of what is available.(or look on ebay)
hope this is of help.
Holly