i hv cut the whole fresh yeast block into 5 smaller blocks before ... use one by one and the remaining keep tight in the fridge ...
now i found that if i open a new small block, it's very ok, no smell on the bread ...
so, i know it's becos the current one is always in & out the fridge ... which will casue the strong yeast smell on the bread
if i buy a whole block next time ... i will cut it even smaller for storage ...