particle item{item:"grass_block"} ~ ~0.05 ~ 0 0 0 0.05 2 normal

execute if entity @s[tag=red] run summon area_effect_cloud ~ ~ ~ {custom_particle:{type:"block",block_state:"minecraft:air"},Duration:2,WaitTime:0,Tags:["snowball_cloud","zombie_cloud","red"]}
execute if entity @s[tag=blue] run summon area_effect_cloud ~ ~ ~ {custom_particle:{type:"block",block_state:"minecraft:air"},Duration:2,WaitTime:0,Tags:["snowball_cloud","zombie_cloud","blue"]}