What if we don't emit event in smartcontract

In ERC20 interface, there are 2 events to be implemented. ​

event Transfer(address indexed from, address indexed to, uint256 value);

event Approval(address indexed owner, address indexed spender, uint256 value);

What if we actually implement transfer and approve functions but never emit the events. Will transaction still appear on bscscan or etherscan, or will it be a quiet transaction that only transactor knows?

BscScan and EtherScan use the Transfer() event to update their statistics of token holders and to display amount of tokens transfered in the transaction detail page.

If you don't emit the event, it

• wouldn't display the "Tokens Transferred" field in the transaction detail page
• wouldn't update the token balance of the sender and receiver on Etherscan (e.g. on their address detail page)

But the contract would still transfer the tokens, and Etherscan would still show the transaction detail page (just without the tokens data).