I feel very disgusting and I want to ask you if you can smell anything odd?
Is this a bad smell coming from you? For real you want me to smell it?
I smell because I feel too tired to shower.
It sounds like you're suffering from depression. Self-care involves cleaning yourself, which will lead to boosting your self-esteem and meeting societal's expectation of cleanliness. You should seek professional help from a mental health practitioner so you will be more motivated to shower.
I feel like such a loser for not wanting to shower so I don't smell.
Just force yourself to shower, it is that easy. No one will judge you for being too clean unless they have mental issues. It would cheer you up, just try it.