The Valspar stink issue seems to just go on and on. This vile paint is not fit for sale and Valspar are not helpful at all. They have had so many complaints that a few more don't matter. That does not leave you in a very good position though with a smelly house. It will not get better on its own. The only solution to this is to re-coat everything you painted in Valspar with Zinser BIN blocker. This deprives the bacteria on your smelly Valspar walls of oxygen and kills it after a few weeks. The smell however will disappear straight away. Repaint after a week in a proper paint. Zinser also do a great range of non smelly mixable emulsion paint which is really good. I only use this brand now in my house. BIN is sold in B&Q but their paint is not sold in the big sheds so check their website for local stockists. Prices are good for it as well but the BIN is very expensive at £40 for 2.5L. Sorry, but this is genuinely proven to be the only solution that works if you want a non smelly, normal house again. Don't try bleaching your walls, its messy and the smell will only be back again with a vengeance after a few days.