Unusual scent: yes! I am just going to invent you the scent of a supernatural, magical being (feel free to make him deduce that!) and say it reeks of... something oily, astringent. Like very strong gasoline? Clearly unhuman. (Note: no actual gasoline on site, just trying to give you a mental idea, the kind of smell that is very much Not Human!)
Embalming scents: yes, they'll have started embalming him... apologies, I don't know that much about old timey embalming, beyond ancient Egypt, but general "embalming scents"?
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Let's go with:
Unusual scent: yes! I am just going to invent you the scent of a supernatural, magical being (feel free to make him deduce that!) and say it reeks of... something oily, astringent. Like very strong gasoline? Clearly unhuman. (Note: no actual gasoline on site, just trying to give you a mental idea, the kind of smell that is very much Not Human!)
Embalming scents: yes, they'll have started embalming him... apologies, I don't know that much about old timey embalming, beyond ancient Egypt, but general "embalming scents"?