If advertising gives people a negative association with a particular brand, I highly doubt it would increase the odds of those people making a purchase.

Otherwise, Firestone should have seen an increase in tire sales after all the free advertising they got on the news. Instead, though, Firestone tire sales fell off a cliff.

I recently threw away a coupon for a product specifically because I saw a few too many extremely annoying online ads for this product, and now I can't stand the brand. They poisoned my image of them.