white wall with black mold. dangerous fungus that needs to be destroyed. black mold buildup. the problem of ventilation

mildew mold damp dirty fungal moisture wall health wet dirt room moldy window grunge spore fungus corner microbiology sickness toxic sanitation white black house interior allergy asthma old texture hygiene renovation home mould shabby pattern messy problem grungy microorganism rotten musty damage bacteria poison surface renovate sick removal paint cement dangerous that needs destroyed buildup ventilation dampness cold apartment mold destroyed buildup apartment