Unpleasant smell of carbylamine is produced when chloroform and alcoholic KOH are heated with

Any primary amine

The correct answer is option 4. Any primary amine.

The carbylamine reaction is a chemical reaction that produces a foul-smelling compound called carbylamine (also known as isocyanide). The reaction takes place when a primary amine is heated with chloroform and alcoholic potassium hydroxide.

Carbylamine has a very strong and unpleasant odor, which is why it is used as a test for the presence of primary amines.

The other options are incorrect. Option (1), any amine, is incorrect because secondary and tertiary amines do not react with chloroform and alcoholic potassium hydroxide to produce carbylamine. Option (2), any aliphatic amine, is incorrect for the same reason. Option (3), any aromatic amine, is incorrect because some aromatic amines, such as aniline, do not react with chloroform and alcoholic potassium hydroxide to produce carbylamine.

Therefore, the only amines that will produce carbylamine when heated with chloroform and alcoholic potassium hydroxide are (4) any primary amines.