* Parking garages
* French fries - https://www.snopes.com/fact-check/mcdonalds-acrylamide-warni... (This sign is real; the McDonald's by my house has one)
* Toast
* Seaweed
* Coffee has been a battleground: https://www.consumerproductslawblog.com/2019/06/what-now-cal...
* Sand
You would be hard pressed to find something that prop 65 does not require to be labelled as cancer causing.