It works the same as the "cancer causing" law in CA. Because the penalty isn't worth the risk, it's almost universally considered better to include the warning

It works the same as the "cancer causing" law in CA. Because the penalty isn't worth the risk, it's almost universally considered better to include the warning even if you don't "think" you need it, because you could be wrong. And being wrong (especially when including the notice costs virtually nothing) is definitely a risky thing.