Your severe throat pain may be caused by irritation or an allergic reaction to chemicals used to ripen the mango. Since you are having trouble swallowing water, you should seek immediate medical attention at an emergency department, as this may indicate significant throat swelling that could obstruct your airway.

Plain soda (carbonated water) is generally safe and does not usually cause permanent health problems. However, drinking it very often may cause bloating, acidity, or worsen acid reflux in some people. It is best to drink it in moderation and also drink regular water daily.