How do you sniff Tylenol?

Follow the directions on the bottle. It's different for adults and kids. Also, don't take Tylenol, which is acetaminophen, with other acetaminophen products. You can exceed the daily recommended limits and cause liver damage. Use of Tylenol with other pain relievers (such as aspirin, ibuprofen, naproxen sodium, ketoprofen or prescription pain relievers) is not recommended, unless directed by your doctor.