Step 1: Understand tobacco usage.
Tobacco is consumed in multiple forms such as smoking, chewing, and sniffing (snuff).
Step 2: Smoking method.
Cigarettes and bidis are common smoked forms of tobacco.
Step 3: Chewing method.
Gutkha and paan are common chewing forms.
Step 4: Snuff usage.
Snuff is powdered tobacco inhaled through the nose.
Step 5: Evaluate injection.
Tobacco is never administered via injection.
Step 6: Conclusion.
Thus, injection is not a mode of tobacco abuse.