Cyanide and benzaldehyde both have an almond-like smell.
Some people cannot smell cyanide (specifically, HCN). Can they also not smell benzaldehyde?
In other words, do they both trigger the same receptors?
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Answer is, they are most probably not correlated. Smell requires molecules to bind to receptors, which they do by structure and functional group. CN is a very small linear molecule that does not even share its heteroatoms with benzaldehyde, an aromatic compound several times cyanide's size. Ergo, it's improbable they share the same scent receptors.