Our pup has been gently and increasingly exposed to lots of noises, traffic, HGV, bus air brakes etc, bangs and clattering from the kitchen, shouting children and people on the street etc since the day we had him and other than the deep vibrations of motorbikes that he hates he's very tolerant and so far takes them all in his stride but feeling a little twitchy about Bonfire Night. We're in a city, fireworks can start a good week beforehand. We've got good soundproofing from double glazing, he's got the den of his crate to retreat to and we plan to have plenty of high value treats on hand and lickimat for chewing/licking self soothing. Anything else you'd recommend? Do those scent diffusers do anything? Thank you in advance.