thanks guys
I added the exception bypass by adding a source ip with negation onto the existing intercept rule ie
config redirect 'adblock_lan53'
option name 'Adblock DNS (lan, 53)'
option src 'lan'
option proto 'tcp udp'
option src_dport '53'
option dest_port '53'
option target 'DNAT'
**option src_ip '!192.168.1.1'**