My husband became dizzy, had slurred speech, headache and nausea after he was using paint thinner in the basement, although the small windows were open. It s been two hours since then and his speech was no longer slurred and he has fallen asleep saying he still had a bad headache and nausea. He didn t even want water. He had not eaten anything except for a couple of cups of coffee in the morning. Should I let him sleep and/or give him some food or liquid? Should I take him to an emergency room?