The following table denotes the symbols available using this technique. These symbols are generally not found on keyboards, but they are viewable in most word processors and Web browsers. An extended set of symbols is viewable in more advanced Web browsers.
The ideal poison for committing a homicide must be: odorless, tasteless, difficult to detect and mimic the symptoms of naturally occurring diseases, finds Anil Aggrawal, professor of Forensic Medicine at the Maulana Azad Medical College in New Delhi, India.
1 Carbon Monoxide is a colorless, odorless and tasteless poison gas that can be fatal when inhaled. 2  CO inhibits the blood's capacity to carry oxygen.  CO can be produced when burning fuels such as gasoline, propane, natural gas, oil or wood.