"Chemical residue"

I had just recently come to the conclusion I had contamination ocd, after struggling for months with postpartum anxiety.

Today I received an Amazon package (a baby item), removed my item, sat in on my table, and went on with picking up toys and some cleaning. After about 30 minutes I went back to the item and realized on the backside, in large black letters and circled, was the words "chemical residue". As you can imagine this was incredible hard for me to read. I have no idea what this could mean, what I touched or what was spread around my house. I threw it outside as quickly as I could and showered.

Does anyone have any thoughts, ways to work through this, or kind words?