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I'm guessing that @bq is referring to a 3M 7502 mask. This is meant to protect from the inhalation of inorganic chems. IANAChemist, but while I'm sure it is better than nothing, I don't know how effective it is at protecting from cooked lead fumes.
They're actually better because they don't heat the lead up as much, so won't release nearly as many fumes.
That said, if indoors, make sure you have lots of ventilation and consider a 3M mask.
We removed the paint off our original huge Victorian garage doors a few years ago, which must have contained a lot of coats of lead-based, and we had no problems.