It depends on what purpose we want them to serve. we make money not art looks at plans for several robots equipped with odor-emitting “sweat glands” which both make the machines seem more organic/alive and effect how people react to them:
Three existing industrial robots have been augmented with ‘sweat glands’. Each uses a specific property of human sub-conscious behavior in response to a chemical stimulus: one makes humans about to undergo surgery more trustful, another one makes women working in production line more focused and the third one is a bomb disposal robot that emits the smell of fear.
The contrast between the physical anti-anthropomorphic nature of the machines and the olfactory anthropomorphism highlights the absurd nature of the trickery at play in all anthropomorphism.