Among the most worrisome is benzene, a carcinogen.

Source: https://www.theguardian.com/environment/2023/jan/15/gas-stoves-pollution-alternatives

In 2002, his scientists found startling levels of benzene and other dangerous chemicals outside the facility, including toluene, which is found in nail polish and explosives, and 1,3-butadiene, a carcinogen used in plastic and rubber products.

Source: https://grist.org/accountability/for-years-the-epa-and-texas-ignored-warning-signs-at-a-chemical-storage-site-then-an-inferno-erupted/

McCain Foods released one carcinogen; ND Paper in Rumford released four; Woodland Pulp released five; and ND Paper in Old Town released four cancer-causing chemicals including lead.

Source: https://www.bangordailynews.com/2023/03/29/mainefocus/maine-companies-pollutant-data-joam40zk0w/

Some 70 percent were positive for benzene, a known carcinogen that is strongly linked to leukemia and other blood disorders.

Source: https://www.dailymail.co.uk/health/article-12198723/Im-lawyer-beauty-products-wouldnt-buy-lawsuits-against-them.html?ns_mchannel=rss&ns_campaign=1490&ito=1490

The IARC’s classification of aspartame as a potential carcinogen is anticipated to spur additional investigation and aid stakeholders in making wiser decisions.

Source: https://punchng.com/who-to-declare-sweeteners-used-in-diet-coke-possibly-carcinogenic-report/