Years ago my local DIY store had a large warning near the door that basically informed us that nothing they had on site should go in your mouth. Apart from my regular grumble of 'who needs to be told that?' (I know, it's horrifying how many people actually do) what bugged me was the statement that paint, or whatever, 'could be harmful if digested'.
Could be harmful a long way before digestion, I always thought. Ingestion. Ingestion.