Step 1 : Introduction to the question "10. In September 1994, professional tennis player Vitas Gerulaitis died of poisoning by which toxic gas?"
...1. Diphosgene 2. Carbon monoxide 3. Hydrogen sulfide 4. Sulfur dioxide Carbon monoxide poisoning is the number one cause of death by poisoning in the USA each year. Vitas Gerulaitis died while taking a nap at a friend's house on Long Island. Carbon monoxide from a swimming pool heater seeped into his room through the air-conditioning system.
