Toilet or waste water smell?

[nushka]

eggy smell!!

I have used a suction sink plunger on the kitchen sink drain, not to alleviate smells but to improve flow, and I'd recommend you try this on your drains too.

The mechanical action shifts trapped debris far better than any other method, it doesn't involve the use of chemicals, and once you have the plunger the cost is zero ...

we had this on an old adventura c.f a few years ago, ot was the waste not draining fully,when we rectified that the smell went,however a friend swears by putting a crumbled washing machine tablet in their tank,leave some water in drive around or too ya camp &hey presto the tank is detergently clensed & smell gone!!