It's challenging to determine the exact reason why you might perceive that nearly everyone sniffs at you without specific context or further information. However, I can offer some possibilities for why this might be happening:
Confirmation bias: It's possible that you are noticing instances where people sniff around you, but it may not be as widespread as you think. Confirmation bias is a cognitive bias where we tend to notice and remember information that confirms our existing beliefs or perceptions.
Personal hygiene or odor: If people are indeed sniffing around you, it could be related to personal hygiene or body odor. Sometimes, individuals might notice or react to certain scents unconsciously.
Environmental factors: There might be environmental factors contributing to the perceived sniffs, such as a particular smell in the surroundings or air fresheners.
Allergies or sensitivities: Some people might have allergies or sensitivities to certain scents or substances, and their sniffing could be a reaction to that.
Social behavior: Sniffing can also be a mannerism or a habitual behavior for some individuals, and it might not necessarily be directed at you.
Cultural differences: Cultural norms and practices can vary, and what might be perceived as sniffing in one culture might have a different meaning in another.
If you are genuinely concerned or bothered by this behavior, consider speaking to someone you trust about it to get a second opinion or feedback. Additionally, ensuring good personal hygiene and avoiding strong scents in public spaces can be helpful. However, keep in mind that sometimes people's behaviors might not be about you personally but could be related to their own habits, sensitivities, or cultural norms.