Genes might explain why dogs can’t sniff out some people under stress
Dogs had trouble finding people with a shorter version of a gene involved in stress management
![dog sniffing grass](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2019/02/022719_ti_fear-smell_feat_free.jpg?fit=860%2C460&ssl=1)
ALTERED ODOR Being stressed or afraid may alter a person’s usual scent and throw dogs off the person’s track. People with a particular version of a gene may have a bigger change in odor when stressed, a study suggests.
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