There's a bad smell coming from Orchard Rite

Too much time spent on the Internet will rot your brain. But before you leave....
Have a look at the following article (click on the thumbnail).

It describes the use of Orchard Rite fans to disperse sewage smells.

It turns out they were pretty successful, however people stopped complaining about the smell and then started complaining about the noise (some people would complain if their rear end was on fire!).

Interestingly, Orchard Rite (which in their two bladed form is widely regarded (at least hereabouts) as the noisiest model of all fans) made modifications to their fans to make them quieter by adding blades to use 3, 4 and then 5 bladed models (the picture shows the 5 bladed models).

So they can be made quiet, but first you have to raise a stink. Sound familiar?