This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Agro-Chemical Poisoning, Subject name: Forensic Medicine
Two farmers were brought and they died soon. Smell of bitter almonds was coming from their mouth. They died of which poison 
Select and explain. 
A. Organophosphorus, B. Hydrogen Cyanide, C. Aconite, D. Opium
B: Hydrogen Cyanide
Answer: B: Hydrogen Cyanide 
Explanation: Ans. is 'b' i.e. Hydrogen cyanide Smell of bitter almonds is seen in cyanide poisoningAlso remember:Garlic odour is seen in-Arsenic poisoning*Fruity odour is seen in-Ethyl alcoholKerosene like odour-Kerosene, organophosphatesPhenolic odour-Carbolic acidRotten eggs-Hydrogen sulphide*Fishy-Zinc phosphideBurnt rope-Cannabis*Bitter almonds-tcyanide