Had a cheap bagless vacuum cleaner once.
"Enjoy a world of bag free cleaning", it boasted.
Sure enough, I never bought a bag for the sucker but unfortunately, it had filters a plenty - one of which you needed to smack over the dustbin with a blunt instrument once a week to get the crud out of it. Many a time I would enter the house covered in last week's skin cells muttering "run me up a bath, Ma, I's been a whompin' on that vacuum filter again."
Anyway, I have a vacuum cleaner that takes scented throw-away bags now, and very nice it is too.
Dyson=mass hypnosis