Why do I have bad breath?

I've been sick in the past few days but I'm getting better now. I caught the flu, sore throat, and fever. But it's all gone now. The thing is, my mouth still feels bitter and my breath smells bad. What causes this and how can I treat this? Is it dangerous? :( please help.
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+1 y
Oh and I've been taking meds too. But this never happened to me before so I'm worried.
Why do I have bad breath?
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