keyword

carbon dioxide side effects

Monthly search volume and cost-per-click data for "carbon dioxide side effects" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=carbon+dioxide+side+effects&country=us" +--------------+------------------+ | volume | 90 | | cpc | $0 | | competition | 0 | | country | US | | updated | 2026-06-13 | +--------------+------------------+

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
carbon dioxide toxicity	140	$0	12/20
co2 side effects	140	$0	12/20
danger of carbon dioxide	110	$0	12/20
carbon dioxide exposure	90	$0	13/20
carbon dioxide inhalation	90	$0	12/20
inhaling carbon dioxide	90	$0	12/20
effects of co2 exposure	70	$0	12/20
is co2 dangerous to breathe in	50	$0	12/20
effects of inhaling co2	40	$0	12/20
inhaling carbon dioxide effects	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=carbon+dioxide+side+effects&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