If you exude love, confidence, pain, etc, you show that you have a lot of that feeling. (Cambridge Dictionary)
To ooze out. (Merriam – Webster)
To undergo diffusion. (Merriam – Webster)
If someone exudes a quality or feeling, or if it exudes, they show that they have it to a great extent. (Collins Dictionary)
If something exudes a liquid or smell or if a liquid or smell exudes from it, the liquid or smell comes out of it slowly and steadily. (Collins Dictionary)
(with reference to moisture or a smell) discharge or be discharged slowly and steadily. (Oxford Dictionary
Emit and exude.
How to exude confidence.