You Do Need power plug adapter while traveling from Comoros to Bangladesh.

Here is Why You Need An Adapter

The outlet and plug type used in Bangladesh are A, C, D, G and K and in Comoros are C and E. This is how they look like.

Comoros

In Comoros, outlets of type C and E are in use.

Type C

Type E

Bangladesh

In Bangladesh, outlets of type A, C, D, G and K are in use.

Type A

Type C

Type D

Type G

Type K