mold, mould, mildew or fungas on the white surface of a wall in an interior room

allergy architecture asthma bacteria basement black building ceiling concrete corner damage damp dirt dirty fungal fungus grunge health house hygiene interior mark messy microorganism mildew mildewed moisture mold moldiness moldy mould mouldy musty old room rotten sanitation shabby sick sickness spores spot stain surface texture unhealthy wall water wet white fungas room