5 years ago I built an ensuite (WC, shower & sink) onto our master bedroom.
I fitted a sanislim macerator to pump the waste out.
These basically vent into the room they are in and do smell despite the claims of charcoal filters. Its like having an open sewer in your bedroom.
It was a Bad idea. The smell isn’t pleasant and the noise is unpleasant in a bedroom at 3am when you go for a pee.
The first sanislim lasted a few years and then wouldn’t stop pumping after the waste was gone and needed a kick to stop it. I didn’t fancy fannying around so bought another to swap immediately.
Horrible job catching all the waste in the pipe before it spilled into the room. Turns out the level float in the first was gunked up with poo so it was still serviceable.
In the end we just used that loo for peeing in to stop the pong. I wouldn’t ever install one again unless its for an occasional shower or washing machine.
Sold the house and bought another house – the new house has another macerator!!! Argh,. This time understairs downstairs loo for the old lady that owned the house – this one will be ripped out.
This one also pongs as there’s no ventilation fan etc in the understairs.