I think I saw my mums 1st husband as a kid, we were alone and I said I'd seen a man in a grey suit watching me ( he was buried in a grey suit)
I've also 'smelt' people, the day after my dad passed the living room (that he died in) at my mums was flooded with a beautiful scent for like 2 mins and then totally disappeared.
I sometimes smell my sister in laws perfume too occasionally it's happened in a few places, at home, in my daughters car it's nice