A few more (possibly stupid) wool questions!

OK, I am new to wool (but not to nappies) and just want to make sure I'm getting this right (so I can feed a new addiction).
I was loaned a Monkey Snuggles wool soaker, whose owner thought it was already lanolised, so it was ready to test. However, the first time I used it, it leaked badly and the colours from the wool ran and dyed the nappy underneath, so with hindsight we don't think it had been lanolised.
It took me a long time to pluck up the courage lanolise it myself and test it again, so I've never had one 'ready to go' and am not sure how it 'should' work.
I lanolised it using Lansinoh as I had some spare, using the instructions on this and other forums. It didn't feel particularly sticky after soaking and drying but I tested it using an extra booster in the nappy and a fleece sleepsuit over the top just in case, and it was perfect (dry, and no colour runs).
Last night I tested it again with one less booster (as I normally use) and a cotton sleepsuit instead of fleece. No colour runs, and dry by morning, so a success. However, I would say that it is slightly smelly by morning, and so is the sleepsuit he was wearing over the top. His night nappies are always smelly by morning, even with a PUL wrap, I think he just does smelly wees. But should the wool retain the smell, or do you think it needs more lanolising? And should the sleepsuit pick up the smell, or is it best to wear nothing over the top of wool? (The sleepsuit only picked up the smell very slightly, but even so).
I'm not sure if perhaps it needs another soak if it was brand new, as I don't know its history, or if I didn't quite get the lanolising right. Or maybe this is just normal and I need to accept my child has smelly wee! (Like I say, his night nappies do smell by morning but usually the PUL prevents it from getting to his clothes and bedclothes etc). Or maybe I need the extra booster in the nappy in order to use wool...
Thoughts please, as I'm not sure what is 'right.'

Night nappies are often smelly due to the urine being more concentrated. Wool will exacerbate this as it actually allows some of the moisture to evaporate making it even more smelly. How wet are the nappies when they come off? It is normal for the wool to smell once taken off but the smell should be gone after its been aired for the day. If not then I'd say it needs lanolising again. Some people find they need to lanolise a few times before using wool at night although I never have.

Ah, OK, thank you. The nappies aren't 'too' saturated underneath, but I think I might put the extra booster back in.
Hopefully the slight smell will have aired out by tonight, it didn't feel wet to the touch, so definitely doing its job.