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Children and pregnancy / Self-reported survey
Household ammonia use was the only one of 10 individual cleaning agents (out of 30 agent-outcome comparisons) significantly associated with an outcome in this study: adolescents in homes where ammonia was ever used had lower odds of rhinitis, adjusted OR 0.60 (95% CI 0.44, 0.82), than those in homes that never used it.
Weak evidence.
Caveats
The study's own authors call this a likely chance finding given the number of associations tested and their limited statistical power to explore it further; not a basis for claiming ammonia protects against rhinitis.
Source: Bukalasa et al. 2019, Environment International Link to this fact
Information, not medical advice. See also: myths we won’t tell you.