The perception of what is considered "weird" can vary greatly depending on cultural, societal, and individual beliefs. However, it's essential to note that finding the smell of used underwear appealing or arousing can be considered unusual and is not a common preference for most people.
Human sexuality is diverse, and individuals can have different fetishes or turn-ons, which may include specific scents or smells. These preferences can develop for various reasons, such as early life experiences, conditioning, or associations formed in one's mind.
If someone has a particular interest or preference that they find harmless and consensual, it is generally acceptable as long as it does not involve non-consenting individuals or cause harm to oneself or others.
However, it's crucial to understand that certain fetishes or preferences may not be widely understood or accepted by others, and discussing them openly may lead to misunderstandings or judgment.
If someone finds that their preferences are causing distress or interfere with their daily life or relationships, it might be helpful to discuss these feelings with a mental health professional who can provide support and guidance in a non-judgmental and confidential environment. They can help the individual understand their feelings better and navigate any challenges they might be facing. Remember, seeking professional help is a sign of strength and self-awareness.