keyword

is co2 dangerous to breathe in

Monthly search volume and cost-per-click data for "is co2 dangerous to breathe in" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=is+co2+dangerous+to+breathe+in&country=us" +--------------+------------------+ | volume | 50 | | cpc | $0 | | competition | 0 | | country | US | | updated | 2026-06-28 | +--------------+------------------+

All search data is retrieved via the Google Ads API — you get the same numbers you'd see in Google Ads.

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword	volume	cpc	overlap
inhaling co2	390	$4.48	12/20
what happens if you inhale carbon dioxide	390	$0	12/20
co2 toxic	170	$0	12/20
carbon dioxide toxic	140	$0	14/20
carbon dioxide toxicity	140	$0	13/20
is carbon dioxide deadly	140	$0	12/20
is co2 harmful to inhale	40	$0	15/20
is co2 safe to breathe	30	$0	15/20
is carbon dioxide dangerous to breathe	30	$0	14/20
is carbon dioxide safe to breathe	30	$0	13/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://api.seodata.dev/v1/keyword?q=is+co2+dangerous+to+breathe+in&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 500/month, $4.99/mo unlimited

Full API spec: llms.txt