The compound obtained by heating a mixture of a primary amine and chloroform with ethanolic potassium hydroxide KOH is

We know that ${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{NH}}_2+{\mathrm{CHCl}}_3+3\mathrm{KOH}⟶{\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{NC}+3\mathrm{KCl}+3{\mathrm{H}}_2\mathrm{O}$
In this reaction, bad smelling compound ethyl isocyanide $\left({\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{NC}\right)$ is produced. This equation is known as carbylamine reaction.