The smell of bitter almonds is seen in poisoning with
Cyanide sometimes is described as having a "bitter almond" smell Garlic odor: Thallium Organophosphate Toxicity Arsenic Poisoning Dimethyl Sulfoxide Sulfur Mustard Phosphite Ref: Krishan Vij textbook of forensic medicine, 5th edition pg : 554
Phosphorus
Hydrocyanic acid
Nitric acid
Oxalic acid
Poisoning