Parents living in a small flat eg 1-2 room rental flat with no help at all. How do you prevent your children from catching the bug when they share the same room and same bed? I am sharing a queen size bed with my 3 girls below 5yo.

Room ventilation. Try to get sunlight into the room or sun the pillows and blankets whenever possible. Load the kids up with supplements and vitamins to build up their immunity. Diffuse essential oils in the room. Good for anti bacterial. If not, you can try spraying dettol spray. Clean the room with dettol also