Loki has the ability to create illusions, most commonly copies of himself, that are visually indistinguishable from the original. However, if you try to touch them (or tackle them), you'll find that they are not solid, so the sense of touch is not part of the illusion.
What about the sense of smell? I ask because in Lego Marvel Super Heroes, there is a level where a number of superheroes get transported to Asgard to fight Loki. At various points, Loki creates duplicates of himself, and the way to progress is to use Wolverine's heightened senses to find the real one. Given that you often hear Wolverine sniffing, I presume that he's smelling out the real one because the illusions don't have a scent.
In mainline comics (i.e. Earth-616 or whatever it calls itself these days), do Loki's illusions fool the sense of smell? Would someone like Wolverine be able to sniff out the real Loki because the illusions don't have a scent?