Of the more than 7,000 chemicals in tobacco smoke, at least 250 are known to be harmful, including hydrogen cyanide, carbon monoxide, and ammonia.
Sida laga soo xigtay Machadka Kansarka Qaranka ee Mareykanka, in ka badan 7.000 oo kiimiko ah oo ku jira qiiqa tubaakada, ugu yaraan 250 ayaa loo yaqaanaa inay waxyeello leeyihiin, oo ay ku jiraan hydrogen cyanide, carbon monoxide iyo ammonia.