Thinking ahead my club has just invested in some of the spray-gun surface disinfectants (they also come as aerosols) and will be putting them in washroom, toilets, showers and kitchen areas with a notice with the wording:
PLEASE HELP US TO AVOID INFECTION
USE
DISINFECTANT
SPRAY
Use the disinfectant spray provided and spray all close contact surfaces before and after use.
If necessary, wipe dry with a paper towel and dispose of it in the bin afterwards.
Read the instructions on the product before use.
It's not much but it is a start.
Mind you, anyone who uses a caving club hut regularly must be pretty well proof against all infections known to man - especially if you are a former Eldon member, reading the tales of the old Eldon hostel in Buxton.