No, SMART held in exchange wallets is subject to the exchanges willingness to pass on SmartRewards, depending on how they hold there funds etc.
The coins are technically in Exchanges wallet (not yours). You’ll need to withdraw the coins to your own wallet either WebWallet, Desktop Wallet, Paper Wallet etc something you have the private keys for in order to be eligible for SmartRewards.
for further reading on SmartRewards https://smartcash.cc/what-are-smartrewards/