As noted, the new guidelines (not rules, guidelines, like "we think you should but we can't make you") call for THC drug screening in all cases. Without that piece of data, that 13% can only be taken at their word. If routine screening is done, we can now see if that number changes./QUOTE]
Sodium benzoate and benzoic acid are benzoates; both are used as preservatives with the latter (benzoic acid) having more potent adverse inflammatory reactions when inhaled.
The Dangers of Juuling | National Center for Health Research
In addition to this patented formula, juul pods contain a greater amount of benzoic acid, 44.8 mg/mL, compared to other e-cigarette brands, which are in the range of 0.2 to 2 mg/mL. According to the Center for Disease Control and Prevention (CDC), benzoic acid is known to cause coughs, sore throat, abdominal pain, nausea, and vomiting if exposure is constant, which is the case when using a juul.
https://cfpub.epa.gov/ncea/pprtv/documents/BenzoicAcid.pdf
Some individuals may show greater sensitivity to benzoic acid or sodium benzoate exposure. Cases of urticaria, asthma, rhinitis or anaphylactic shock have been reported after oral, dermal, or inhalation exposure to these compounds (WHO, 2000).
Benzoic acid1)2) and alkali benzoates2) [MAK Value Documentation, 2017]
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Benzoic acid is strongly irritating to the eyes and causes irreversible damage to the cornea in some cases, whereas it is only mildly irritating to the skin. Sodium benzoate is, at most, slightly irritating to the eyes, and not irritating to the skin. Benzoic acid and its salts can induce immediate, non‐immunological erythematous or urticarial reactions. Urticarial swelling occurs usually within 15 to 30 minutes after the exposure, and subsides as a rule after 2 to 3 hours. After oral administration of a total of 35 g within 20 days, benzoic acid caused symptoms such as nausea, headaches, weakness, burning and irritation in the oesophagus and digestive disorders in volunteers. Among other effects, reduced body weight gains, increased liver and kidney weights, ataxia, tremor, excitation, aggressive behaviour, convulsions and mortality were observed in rats after repeated oral administration of benzoic acid or sodium benzoate doses of more than 2000 mg/kg body weight and day. Histopathological changes were diagnosed in the brain, the liver and the kidneys. In a 4‐week inhalation study with rats, benzoic acid caused interstitial inflammation of the lungs with subsequent fibrosis at concentrations of 25 mg/m3 and above.
If you are one of the 25 million asthmatics in the US (or is allergic to benzoates) chances are you'll become one of the (nicotine-only) EVALI or VAPI statistics.