Good description Opssys.
I don't think you're too far wide of the mark there. The Soviets had an obsession with disinfectant, and there was always the routine closing of restaurants (usually at about lunchtime!), and out would come the sweeping brush and dirty cloth to deal with the floor. The fact that the aircraft were not used much, (they would be locked up for days at a time), allowed the smell to permeate.
I would rather not have had to fly in the 104, but there sometimes was no choice. I preferred the Trident, with as I mentioned on another thread, the captain declaring on the way home 'We have now left Soviet airspace', at which time the G&Ts would start flowing, especially on that 'club four' arrangement with the rearward facing seats and the foldaway table.
Believe me, the vodka on the 104s made the thought of several weeks in remote parts of the Soviet Union slightly more bearable -I didn't touch the chicken!