keyword

do humans produce carbon monoxide when breathing

Monthly search volume and cost-per-click data for "do humans produce carbon monoxide when breathing" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=do+humans+produce+carbon+monoxide+when+breathing&country=us" +--------------+------------------+ | volume | 30 | | cpc | $0 | | competition | 0 | | country | US | | updated | 2026-06-12 | +--------------+------------------+

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 monoxide poisoning symptoms	49,500	$0	10/20
symptoms of carbon monoxide poisoning	49,500	$0	10/20
carbon monoxide poisoning	40,500	$0	10/20
signs of carbon monoxide poisoning	14,800	$0	10/20
carbon monoxide deaths	2,400	$0	10/20
effect of carbon monoxide on human body	140	$0	12/20
breathe out carbon monoxide	30	$0	12/20
do we breathe out carbon monoxide or carbon dioxide	30	$0	11/20
humans exhale carbon dioxide or monoxide	20	$0	12/20
do people exhale carbon monoxide	10	$0	11/20

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=do+humans+produce+carbon+monoxide+when+breathing&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