This question already has an answer here:
I bought a soldering station a while back and was practicing on a kit and had the website on assembly up while I was soldering using 60/40 tin-lead solder. Should I worry about splatter on the surfaces causing contamination? Or from using my keyboard/mouse while I was soldering? I occasionally snack in there and was wondering if I was slowly poisoning myself.
Edit: is there any way to clean it the contamination from the room?
Edit 2: Possible duplicate doesn't quite answer my concern on surface contamination and transfer of contamination I feel. For example when I touched a door knob after soldering but before washing my hands, would I have transferred any amount of lead contamination to the door knob in which case I could be unknowingly ingesting lead by touching the door knob and eating/drinking in another room?
Edit 3: question was not properly answered I feel, does lead transfer to surfaces after my hand touched the solder because if so wouldn't door knobs and light switches in my house be contaminated