airallergyasthmaavoidblackcausechangecleaningclimatecoronaviruscovcoviddampnessdetoxdiseaseenvironmentalexposurefactsfungalfungifungusgermshealthhelphomehypersensitivityillnessincreasesindoorknowlongmeasuremultipleneedpollutionprotectqualityreducerelationshipremediationriskssafesarssaunassensitivitysmellsporesstopsurfacessyndrometestingtoptoxictriggerstruthuglyususeusedusingvalidatewaterworkplace