Lead can get into clothing through dyes used in the manufacturing, which may contain lead acetate that acts as a fixative.
From the omaha.com
The most frequently used material is lead acetate, though silver nitrate, copper, nickel, cobalt, bismuth and iron salts have also been used.
From the guardian.co.uk
Sapa that was produced in lead pots was rich in lead acetate, a sweet substance also called sugar of lead or sugar of Saturn, which contributed to lead poisoning among the Roman aristocracy.
From the en.wikipedia.org
Grids were stained with 2% uranyl acetate and Reynold's lead stain.
From the nature.com
Uranyl acetate and lead citrate are commonly used to impart contrast to tissue in the electron microscope.
From the en.wikipedia.org
I did a little background research into artificial sweeteners and found that acetate of lead was even used once upon a time.
From the guardian.co.uk
Another method, used in the early nineteenth century, had to do with reacting copper sulfate solution with solutions of lead, barium, or calcium acetate.
From the en.wikipedia.org
Typically thin sections are stained for several minutes with an aqueous or alcoholic solution of uranyl acetate followed by aqueous lead citrate.
From the en.wikipedia.org
However, GranuFlo and NaturaLyte contain higher levels of acetate compared to other competing products, and failing to take this into account can lead to excess bicarbonate or metabolic alkalosis.