No person shall use, set off, handle, sell, offer to sell or possess for any purpose, any substance, liquefied gas or gasses designed to incapacitate or render helpless any human being by means of drawing tears, creating nausea, coughing or for creating hysteria or panic or for the purpose of making any building or area untenable by human beings, or any device or apparatus designed to liberate, set off, explode or use such substances, except as permitted by Council.