![Gas Appliance Spares on Twitter: "Carbon monoxide is a colourless, tasteless gas that is poisonous. If exposed to it for a long period of time can be extremely fatal. Stay safe: https://t.co/8olxuR3ld1…/SAFET…/Carbon- Monoxide-Alarms # Gas Appliance Spares on Twitter: "Carbon monoxide is a colourless, tasteless gas that is poisonous. If exposed to it for a long period of time can be extremely fatal. Stay safe: https://t.co/8olxuR3ld1…/SAFET…/Carbon- Monoxide-Alarms #](https://pbs.twimg.com/media/EK83i4rXUAkmtiR.jpg)
Gas Appliance Spares on Twitter: "Carbon monoxide is a colourless, tasteless gas that is poisonous. If exposed to it for a long period of time can be extremely fatal. Stay safe: https://t.co/8olxuR3ld1…/SAFET…/Carbon- Monoxide-Alarms #
![Carbon monoxide - 8 hour mean limit value for the protection of human health — European Environment Agency Carbon monoxide - 8 hour mean limit value for the protection of human health — European Environment Agency](https://www.eea.europa.eu/data-and-maps/figures/carbon-monoxide-8-hour-mean-limit-value-for-the-protection-of-human-health-5/eu12co_8hr/EU12CO_8Hr.tif.75dpi.gif/at_download/image)
Carbon monoxide - 8 hour mean limit value for the protection of human health — European Environment Agency
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