Very easy three smokes to completely cut off CT from outside. Difference beetween two lamp smokes is that 1st one you throw with normal jumpthrow, second with +w & jumpthrow. if somebody doesn't have command for +w jt here it is:
Run and jumpthrow bind:
alias "+RunJThrow" "+forward;+jump;-attack
alias "-RunJThrow" "-forward;-jump"
bind "o" "+RunJThrow"