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HHI-Pedia Entries

Occupied Space	The part of a house to which the occupants normally have access, or habitable rooms; also called the living space.
Odor	Don’t cover up, clean up. Here’s how.
On-Purpose Ventilation	Purposeful and directed air movement into and out of a building.
Optical Brighteners	Is your laundry really sparkling white or are you just seeing things?
Organic Chemical, Compound	Any substance that has carbon molecules in its structure.
Organic Gardening	Organic gardening is the practice of producing crops by avoiding the use of synthetic chemical fertilizers, pesticides, fungicides, and growth regulators.
Oriented Strand board (OSB)	As with construction-grade plywood, it can often be used in a healthy house if it is well-separated from the living space.
Outgassing	The release of volatile gases from a solid material as a part of aging, decomposition, or curing.
Ozone	“Good up high, bad nearby,” according to one government agency. Here’s why.

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Information provided by The Healthy House Institute is designed to support, not to replace the relationship between patient/physician or other qualified healthcare provider.