My son George is 17 months old and still occasionally spills, but mostly has silent reflux now. I am expecting he will be over it by 2 yrs old.
I found that using fabric softener (lily of the valley from the Cuddly range was best) helped to remove the smell.
I remember a couple of times he lost the whole feed after a breastfeed, before I had a chance to put him down. You end up sitting there for a moment wondering how you'll get up without covering the furniture in it too! We ended up having to share a bath, with all the clothes going straight into a warm wash.
You will find that things do improve, and believe it or not you do laugh about it later.
Rachelle, NZ, son George 10.12.02, Ian 15.06.04