I'd be smelling you'd be smelling he'd be smelling we'd be smelling you'd be smelling they'd be smelling
Perfect
I should've smelled, smelt you should've smelled, smelt he should've smelled, smelt we should've smelled, smelt you should've smelled, smelt they should've smelled, smelt
V-ing perfect
I should've been smelling you should've been smelling he should've been smelling we should've been smelling you should've been smelling they should've been smelling
Negation
Simple form
I shouldn't smell you shouldn't smell he shouldn't smell we shouldn't smell you shouldn't smell they shouldn't smell
V-ing form
I shouldn't be smelling you shouldn't be smelling he shouldn't be smelling we shouldn't be smelling you shouldn't be smelling they shouldn't be smelling
Perfect
I shouldn't have smelled, smelt you shouldn't have smelled, smelt he shouldn't have smelled, smelt we shouldn't have smelled, smelt you shouldn't have smelled, smelt they shouldn't have smelled, smelt
V-ing perfect
I shouldn't have been smelling you shouldn't have been smelling he shouldn't have been smelling we shouldn't have been smelling you shouldn't have been smelling they shouldn't have been smelling
Interrogative form
Simple form
should I smell? should you smell? should he smell? should we smell? should you smell? should they smell?
V-ing form
should I be smelling? should you be smelling? should he be smelling? should we be smelling? should you be smelling? should they be smelling?
Perfect
should I have smelled, smelt? should you have smelled, smelt? should he have smelled, smelt? should we have smelled, smelt? should you have smelled, smelt? should they have smelled, smelt?
V-ing perfect
should I have been smelling? should you have been smelling? should he have been smelling? should we have been smelling? should you have been smelling? should they have been smelling?
Interro-negative form
Simple form
shouldn't I smell? shouldn't you smell? shouldn't he smell? shouldn't we smell? shouldn't you smell? shouldn't they smell?
V-ing form
shouldn't I be smelling? shouldn't you be smelling? shouldn't he be smelling? shouldn't we be smelling? shouldn't you be smelling? shouldn't they be smelling?
Perfect
shouldn't I have smelled, smelt? shouldn't you have smelled, smelt? shouldn't he have smelled, smelt? shouldn't we have smelled, smelt? shouldn't you have smelled, smelt? shouldn't they have smelled, smelt?
V-ing perfect
shouldn't I have been smelling? shouldn't you have been smelling? shouldn't he have been smelling? shouldn't we have been smelling? shouldn't you have been smelling? shouldn't they have been smelling?