Probably not, although they might make his fuel lines tingle.

"Ah, I'm First Aid," he hastily introduces himself, in a high and oddly natural voice given that it seems to come from a being made entirely of metal and glass. It goes well with the rich, thick moss that covers his shoulders. "Like you, I'm one of the medical professionals looking after this town. My specialties are emergency surgery and triage, although I've also been running a general practice since my arrival last year. I thought it would be a good idea to come and introduce myself --" And there's a smile in his voice, for all that his mask stays up, impassive and professional, "So there would be less confusion later. An emergency isn't a good time to explain that yes, I'm a person, and I'm here to help."