Answer true or false for the following statements

1. Carbon monoxide is a reddish-brown gas with a strong, pungent odour.
2. Nitrogen dioxide can irritate the eyes, nose, throat, and lungs and may cause symptoms immediately or with a delay.
3. Ontario currently has a public health regulatory framework that requires routine indoor air quality inspections in ice arenas.
4. Ice arenas are considered facilities that may pose an elevated risk of exposure to environmental health hazards under the Ontario Public Health Standards.

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