Boris, remember that lead paint that is not disturbed will not bother anybody. But anything that causes the paint to dust off, like sanding, flake off or get hot enough for the lead to melt or vaporize out of the paint is a problem. Keeping the lead paint suspended in some kind of gel, like some paint strippers, is relatively safe. You might investigate Peel Away at www.peelaway.com, particularly if your siding is still in place. If you have already taken it down, stripping will actually be more difficult and having someone else do it is not a bad idea. I do hope that you remembered that you were working with lead based paint if you did the siding removal. Chipping, flaking and dusting of the paint had to be part of that process. If you suspect that you are having problems because you did not protect yourself, PLEASE have yourself tested.