Two farmers were brought and they died soon. Smell of bitter almonds was coming from their mouth. They died of which poison:
**Core Concept**
The smell of bitter almonds is a classic symptom associated with cyanide poisoning. This is due to the release of cyanide ions (CN-) from the cyanogenic glycosides present in certain foods, such as apricot kernels, apple seeds, and bitter almonds.
**Why the Correct Answer is Right**
Cyanide poisoning occurs when cyanide ions bind to the iron atom in cytochrome c oxidase, an enzyme crucial for cellular respiration. This binding inhibits the electron transport chain, leading to a decrease in ATP production and ultimately causing cell death. The smell of bitter almonds is a result of the release of cyanide ions from the cyanogenic glycosides.
**Why Each Wrong Option is Incorrect**
- **Option A:** This option is not relevant to the scenario described.
- **Option B:** While this option is a poison, it is not associated with the smell of bitter almonds.
- **Option C:** This option is also not relevant to the scenario described.
**Clinical Pearl / High-Yield Fact**
The smell of bitter almonds is a classic symptom of cyanide poisoning, but it's worth noting that not everyone can detect this smell due to genetic variations in the enzyme responsible for detecting cyanide.
**Correct Answer: C. Cyanide poisoning.**