My partner and I spent 18 months in fireman's hats - he was Elvis Cridlington and I was Station Officer Steele, while our eldest (now 15) was Fireman Sam. I used to have to make wide detours to avoid fire stations unless I had a spare hour to spend clambering on fire engines. Don't worry, the phase does pass!
Good luck this week. I see you've lost almost a stone already! You've obviously got the bit between your teeth. x