This article discusses the health dangers of indoor pot grows and how residents, neighbors, etc. can be exposed.
"The study shows that highly-elevated airborne levels of mold spores within these structures subjected occupants, emergency personnel and other individuals to significant potential health hazards. Potential health effects include hypersensitivity pneumonitis, allergic rhinitis, asthma and other respiratory diseases. Another concern was elevated carbon dioxide levels which, if generated using fossil fuel combustion, can result in the production of carbon monoxide resulting in significant health effects, or death, to exposed individuals."
"Others may be impacted as well, particularly in multi-family buildings, which may allow chemicals used and mold spores to be introduced into ventilation systems, exposing other residents.
"Since these operations may go undetected, an unsuspecting family buying the residence at a later date may be put at risk of adverse health effects due to residual mold contamination."
Indoor pot grows are so hazardous that John Martyny of National Jewish Health and an associate professor for the University of Colorado Denver believes that exposing children to such an environment is child abuse.