Will two diffuser vents in the bathroom be overkill?

I'm installing an inline extractor for the bathroom and I'm wondering if it's worth putting in two diffuser vents instead of one, one above the toilet for the smells and the other above the bath shower for the steam?

Is this overkill? My bathroom measures about 1.8m x 2m.

Initially I was going to just put one above the bath shower but is that actually the best place to put it and will that still help with removing the smells by itself?

I was also wondering if you can actually have two diffuser vents for just one inline extractor but then I saw this on Manrose's website so I'm assuming that's a yes. In fact, I think that's the same inline extractor as mine.

Thanks.

 

Yes had twin vents to my shower room , worked so well 2m mirror outside shower door never steamed up.

 

Useful to know, thanks.

Do you think having two reduces the extraction rate for each vent?

 

The vents don't have an extraction rate only the fan.